8. Katie has $120 on her lunch card. Each time she orders a meal $4.50 is deducted. The function f(x) = 120 - 4.5x represents the amount of money, f(x), she has on her card after
ordering x meals. How much money does she have after ordering 7 meals?

solution:

→c= a b , that is product of a and b is possible only when when a is m × n matrix and b is n × p matrix.

that is, number of columns of a= number of rows of b.

so, size of matrix , c= a b is , if a = (m × n)matrix

b= (n × p)matrix

then a b = [ (m × n)matrix] ×[   (n × p)matrix ]

→→c= a b= [m × p ] matrix

→→size of product a b will be equal to = number of rows of a × number of columns of b

h/o/e/s mad

step-by-step explanation:

si si si

7,24

step-by-step explanation: